private static CsvString Wrap(CsvString writer, int count, HCsvStringContext info)
{
int size = info.MinSize * count + info.GetHeaderSize();
char[] buffer = CharsBufferManager.GetBuffer(size);
writer = new CsvString(buffer);
writer.WriteHeader(info.Names);
return(writer);
}
public static string ToCsv(object value)
{
if (value == null)
{
return(string.Empty);
}
Type type = value.GetType();
CsvString writer = null;
HCsvStringContext info = null;
if (type.IsArray)
{
Array ar = (Array)value;
if (ar.Length == 0)
{
return(null);
}
Type cType = null;
for (int i = 0; i < ar.Length; i++)
{
if (ar.GetValue(i) != null)
{
cType = ar.GetValue(i).GetType();
info = GetContext(cType);
break;
}
}
writer = Wrap(writer, ar.Length, info);
if (type.FullName == "System.Object[]")
{
for (int i = 0; i < ar.Length; i++)
{
object item = ar.GetValue(i);
if (item != null)
{
if (cType == item.GetType())
{
info.Serializer(writer, item);
}
else
{
writer.WriteNullLine(info.Names.Count);
}
}
else
{
writer.WriteNullLine(info.Names.Count);
}
writer.WriteNewLine();
}
}
else
{
for (int i = 0; i < ar.Length; i++)
{
object item = ar.GetValue(i);
if (item != null)
{
info.Serializer(writer, item);
}
else
{
writer.WriteNullLine(info.Names.Count);
}
writer.WriteNewLine();
}
}
}
else if (type.IsGenericType)
{
Type[] types = type.GenericTypeArguments;
if (types.Length == 1)
{
info = GetContext(types[0]);
IList list = value as IList;
if (list != null)
{
writer = Wrap(writer, list.Count, info);
for (int i = 0; i < list.Count; i++)
{
object item = list[i];
if (item != null)
{
info.Serializer(writer, item);
}
else
{
writer.WriteNullLine(info.Names.Count);
}
writer.WriteNewLine();
}
}
}
else
{
throw new NotSupportedException("not support multi generic type!");
}
}
else
{
//直接处理枚举模式
//bool isFirst = true;
//foreach (object item in ar)
//{
// if (isFirst)
// {
// info = GetContext(item.GetType());
// int size = info.MinSize * ar.Length + info.GetHeaderSize();
// char[] buffer = CharsBufferManager.GetBuffer(size);
// writer = new CsvString(buffer);
// writer.WriteHeader(info.Names);
// isFirst = false;
// }
// info.Serializer(writer, item);
// writer.WriteNewLine();
//}
}
CharsBufferManager.SetBuffer(writer.GetBuffer());
return(writer.ToString());
}
internal CsvString(CsvString stream)
{
this._buffer = stream._buffer;
this.position = stream.position;
this.sets = stream.sets;
}